<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - draggable cubes</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				font-family: Monospace;
				background-color: #f0f0f0;
				margin: 0px;
				overflow: hidden;
			}
		</style>
	</head>
	<body>

		<script src="../build/three.js"></script>

		<script src="js/controls/DragControls.js"></script>
		<script src="js/controls/TrackballControls.js"></script>

		<script src="js/libs/stats.min.js"></script>

		<script>

			var container, stats;
			var camera, controls, scene, renderer;
			var objects = [];

			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 5000 );
				camera.position.z = 1000;

				controls = new THREE.TrackballControls( camera );
				controls.rotateSpeed = 1.0;
				controls.zoomSpeed = 1.2;
				controls.panSpeed = 0.8;
				controls.noZoom = false;
				controls.noPan = false;
				controls.staticMoving = true;
				controls.dynamicDampingFactor = 0.3;

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0xf0f0f0 );

				scene.add( new THREE.AmbientLight( 0x505050 ) );

				var light = new THREE.SpotLight( 0xffffff, 1.5 );
				light.position.set( 0, 500, 2000 );
				light.angle = Math.PI / 9;

				light.castShadow = true;
				light.shadow.camera.near = 1000;
				light.shadow.camera.far = 4000;
				light.shadow.mapSize.width = 1024;
				light.shadow.mapSize.height = 1024;

				scene.add( light );

				var geometry = new THREE.BoxBufferGeometry( 40, 40, 40 );

				for ( var i = 0; i < 200; i ++ ) {

					var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) );

					object.position.x = Math.random() * 1000 - 500;
					object.position.y = Math.random() * 600 - 300;
					object.position.z = Math.random() * 800 - 400;

					object.rotation.x = Math.random() * 2 * Math.PI;
					object.rotation.y = Math.random() * 2 * Math.PI;
					object.rotation.z = Math.random() * 2 * Math.PI;

					object.scale.x = Math.random() * 2 + 1;
					object.scale.y = Math.random() * 2 + 1;
					object.scale.z = Math.random() * 2 + 1;

					object.castShadow = true;
					object.receiveShadow = true;

					scene.add( object );

					objects.push( object );

				}

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );

				renderer.shadowMap.enabled = true;
				renderer.shadowMap.type = THREE.PCFShadowMap;

				container.appendChild( renderer.domElement );

				var dragControls = new THREE.DragControls( objects, camera, renderer.domElement );
				dragControls.addEventListener( 'dragstart', function () {

					controls.enabled = false;

				} );
				dragControls.addEventListener( 'dragend', function () {

					controls.enabled = true;

				} );

				var info = document.createElement( 'div' );
				info.style.position = 'absolute';
				info.style.top = '10px';
				info.style.width = '100%';
				info.style.textAlign = 'center';
				info.innerHTML = '<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - draggable cubes';
				container.appendChild( info );

				stats = new Stats();
				container.appendChild( stats.dom );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				controls.update();

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>
